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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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- Definition

The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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- Definition

The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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-Section 50

-Paragraph 15

-Subparagraph (c)

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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Taxes On Earnings (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
	May 04, 2013	Apr. 28, 2012	May 04, 2013 Internal Revenue Service [Member] Earliest [Member]	May 04, 2013 Internal Revenue Service [Member] Latest [Member]	May 04, 2013 State [Member] Earliest [Member]	May 04, 2013 State [Member] Latest [Member]
Income Tax Contingency [Line Items]
Reserves for unrecognized tax benefits	$ 87.6	$ 68.0
Interest related to the reserve for unrecognized tax benefits	18.4	16.7
Impact of recognizing taxes and interest related to unrecognized tax benefits	44.2
Unrecognized tax benefits reduction resulting from lapse of applicable statute of limitations	$ 2.1
Open tax year			2009	2012	2008	2012